Wearable Triboelectric Generator for Powering the Portable Electronic Devices

Cui, Nuanyang; Liu, Jinmei; Gu, Long; Bai, Suo; Chen, Xiaobo; Qin, Yong

doi:10.1021/am5071688

Cited by 134 publications

(100 citation statements)

References 30 publications

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“…[1][2][3] It is estimated that harvesting even 1%-5% of the body's power without signifi cantly increasing the load to the human body will be suffi cient to run many body-worn devices. [ 4,5 ] Triboelectric nanogenerators (TENGs) have been demonstrated to harvest energy from the human activities as sustainable self-suffi cient micro/nano-power sources, due to their high effi ciency, low for the contact-mode TENG connected with an external resistor.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10][11][12][13][14][15][16][17][18] To improve the performance and broaden the applications of TENGs, numerous efforts have been made with focus on both enhancement of the surface charge density and development of new structures/modes. [ 2,4,7,9,13,[19][20][21][22][23][24][25] So far, the electric power output of TENGs has been improved up to ≈500 W m −2 by sophisticated design of device structure. [ 18,[26][27][28] Demonstrated TENGs have been working in four modes, that is, the contact-separation or contact mode in short, sliding mode, single-electrode mode, and free-standing triboelectric-layer mode.…”

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confidence: 99%

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A Fully Verified Theoretical Analysis of Contact‐Mode Triboelectric Nanogenerators as a Wearable Power Source

Bao

Zeng

Peng

et al. 2016

Advanced Energy Materials

162

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cost, environmental friendliness, and universal availability. [6][7][8][9][10][11][12][13][14][15][16][17][18] To improve the performance and broaden the applications of TENGs, numerous efforts have been made with focus on both enhancement of the surface charge density and development of new structures/modes. [ 2,4,7,9,13,[19][20][21][22][23][24][25] So far, the electric power output of TENGs has been improved up to ≈500 W m −2 by sophisticated design of device structure. [ 18,[26][27][28] Demonstrated TENGs have been working in four modes, that is, the contact-separation or contact mode in short, sliding mode, single-electrode mode, and free-standing triboelectric-layer mode. The performance of the TENGs in contact-mode is better than that of TENGs in the sliding mode, because a much higher maximum displacement of TENGs in the sliding mode is required than that of TENGs working in the contact-mode, in order to achieve the same level of open circuit voltage. [ 29 ] The TENGs working in the contact-mode are particularly interesting for applications like foot-mounted wearable electronic systems because of the short vertical displacement involved and ease of integration.The fundamental principle of TENGs is based on the coupled effects of triboelectrifi cation and electrostatic induction. A theoretical model has been proposed for the TENGs working in the contact mode by Wang and co-workers. By utilizing the derived governing equation, the real-time output characteristics and the relationship between the optimum external resistance and TENG para meters were numerically simulated. [ 30 ] However, the model was not validated by corresponding experiments with measured real-time output characteristics. Furthermore, it is known that the real-time output characteristics would be affected by the materials, device structural parameters, operation conditions, and equivalent resistance. Assumptions made on simple profi les of working velocity may infl uence the model's validity in real situations. For instance, during real human walking, the previous wearing trials of an intelligent footwear system illustrated that the velocity profi le was complex and varied signifi cantly with time for a foot-mounted device. [ 31,32 ] Therefore, it is highly desirable to develop a theoretical model that is fully verifi ed by corresponding experiments. Such an experimentally verifi ed model is essential for designing and optimizing TENGs for intended applications.In this paper, based on conservation of charges and zerovoltage for close-loop circuits, a theoretical model is presented Harvesting mechanical energy from human activities by triboelectric nanogenerators (TENGs) is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, and wearable electronics. A theoretical model for contact-mode triboelectric nanogenerators based on the principles of charge conservation and zero loop-voltage is illustrated. Explicit expressions for the output current, voltage, and power are presented for the TENGs ...

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

A Fully Verified Theoretical Analysis of Contact‐Mode Triboelectric Nanogenerators as a Wearable Power Source

Bao

Zeng

Peng

et al. 2016

Advanced Energy Materials

162

View full text Add to dashboard Cite

show abstract

“…Despite high energy densities, the converted energy has a small current and the generators energy output over time is unpredictable, requiring complex supporting power management electronics. Cui et al have demonstrated a cloth-based triboelectric generator where frictional forces between the forearm of the wearer and their body was used to generate energy [125].…”

Section: Textile Energy Solutionsmentioning

confidence: 99%

A Historical Review of the Development of Electronic Textiles

Hughes‐Riley

Dias

Cork

2018

Fibers

109

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Abstract:Textiles have been at the heart of human technological progress for thousands of years, with textile developments closely tied to key inventions that have shaped societies. The relatively recent invention of electronic textiles is set to push boundaries again and has already opened up the potential for garments relevant to defense, sports, medicine, and health monitoring. The aim of this review is to provide an overview of the key innovative pathways in the development of electronic textiles to date using sources available in the public domain regarding electronic textiles (E-textiles); this includes academic literature, commercialized products, and published patents. The literature shows that electronics can be integrated into textiles, where integration is achieved by either attaching the electronics onto the surface of a textile, electronics are added at the textile manufacturing stage, or electronics are incorporated at the yarn stage. Methods of integration can have an influence on the textiles properties such as the drapability of the textile.

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“…A thin-film micro-grating triboelectric generator produced 50 mW/cm 2 with conversion efficiency of 50%; other devices reached 85% energy conversion efficiency, when operated at low frequency [53]. Many other groups developed new types of tribogenerators, often based on the setups developed by Wang's group, contributing to the large number of recent publications [54][55][56][57][58][59][60].…”

Section: Nanostructured Electrostatic Generatorsmentioning

confidence: 99%